Home / 12,419.36-18,630.80-3,654.88

Finding the Fourth Proportional to 12,419.36, 18,630.80 and 3,654.88

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Solution

The fourth proportional to 12,419.36, 18,630.80 and 3,654.88 is: 5,482.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.36 : 18,630.80 = 3,654.88 : x
  2. Step 2: Convert to fraction form
    12,419.36/18,630.80 = 3,654.88/x
  3. Step 3: Cross multiply
    12,419.36x = 18,630.80 × 3,654.88
  4. Step 4: Simplify right side
    12,419.36x = 68,093,338.30
  5. Step 5: Solve for x
    x = 68,093,338.30/12,419.36
  6. Step 6: Final answer
    x = 5,482.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.